Moving Synchronized Tracks Together

It's fairly simple to move - that is, time shift - all of the
Tracks in an Audacity project Together. In theory - you just enable
the "Synchronize Tracks" feature - and time shift to suit. But it
could be frustrating if you want to shift only a subset of Tracks -
vis-à-vis the others in the project - which is a more likely use
case anyway. In this Episode - we'll send that
can't-move-the-right-Tracks-Together frustration to /dev/null.